W83759A Datasheet, PDF (24/41 Pages) Winbond – ADVANCED VL-IDE DISK CONTROLLER

W83759A
CRX8Ch (SD0TIM0) Read/Write Secondary Drive 0 Timing Control 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SD0ACT3 SD0ACT2 SD0ACT1 SD0ACT0 SD0RCV3 SD0RCV2 SD0RCV1 SD0RCV0
Bit 7-Bit 4
Bit 3-Bit 0
SD0ACT3−0
SD0RCV3−0
SD0 Data Register Port (170h) Read/Write Active Time
Definition of these bits same as PD0ACT3−0
SD0 Data Register Port (170h) Read/Write Recovery Time
Definition of these bits same as PD0RCV3−0
CRX8Dh (SD0TIM1)
Bit 7
SD0AST1
Bit 6
SD0AST0
Read/Write Secondary Drive 0 Timing Control 1
Bit 5
Bit 4
SD0DHT1 SD0DHT0
Bit 3
SD0PRE
Bit 2
SD0DMA
Bit 1
SD0RDY
Bit 0
SD0ADV
Bit 7-Bit 6
Bit 5-Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SD0AST1−0
SD0DHT1−0
SD0PRE
SD0DMA
SD0RDY
SD0ADV
SD0 Data Register Port (170h) Address Setup Time
Definition of these bits same as PD0AST1−0
SD0 Data Register Port (170h) Data Hold Time
Definition of these bits same as PD0RDHT1−0
SD0 Prefetch/Post write control
0
Prefetch/Post write enabled
1
Prefetch/Post write disabled
SD0 DMA mode control
0
DMA mode enabled
1
DMA mode disabled
SD0 Data Register Port (170h) IOCHRDY Control
0
IOCHRDY enabled
1
IOCHRDY disabled
SD0 Data Register Port (170h) Advanced Timing Enable
0 Normal timing (depends on SP1, MD1, MD0
setting)
1 Advanced timing (depends on SD0TIM1−0 setting)
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